1. Transmission FundamentalsChapter 2 2. Electromagnetic Signal Function of time Can also be expressed as a function offrequency Signal consists of components of…
Slide 1Physical Layer: Signals, Capacity, and Coding CS 4251: Computer Networking II Nick Feamster Fall 2008 Slide 2 This Lecture Whats on the wire? –Frequency, Spectrum,…
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Waves Waves transfer ENERGY. Wave speed can be calculated from Speed = distance / time. Radio and TV waves travel at the speed of light through air : 3.0 x 108 ms-1 Speed…
Telescopes continued… Why is bigger better? Two reasons… (1) Light-gathering power Depends on the area of the objective mirror (or lens) Compare 16-inch to our 10-inch…